Finding the Fourth Proportional to 738,378.72, 1,018,963.08 and 398,847.12
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Solution
The fourth proportional to 738,378.72, 1,018,963.08 and 398,847.12 is: 550,409.27
Step by Step Solution
- Step 1: Write the proportion equation
738,378.72 : 1,018,963.08 = 398,847.12 : x - Step 2: Convert to fraction form
738,378.72/1,018,963.08 = 398,847.12/x - Step 3: Cross multiply
738,378.72x = 1,018,963.08 × 398,847.12 - Step 4: Simplify right side
738,378.72x = 406,410,489,844.33 - Step 5: Solve for x
x = 406,410,489,844.33/738,378.72 - Step 6: Final answer
x = 550,409.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.